Question

give two examples of main-frame computers

Answer 1

Mainframe Computer

Mainframe computers can store huge amount of data. They are large in size and memory, power and expensive. These machines are capable to different operating system on the same time and support time sharing and virtual memory. Universities, banking institutions, stock exchanges, insurance companies are some examples of using mainframe servers for maintaining students’ data, ATM transactions, financial transactions, clients and employees’ records.

The main difference between supercomputer and mainframes is that supercomputer has a speed of calculations and mostly used for space scientific and engineering related problems i.e. data crunching while mainframe servers are used for transaction process.
There are other IBM computers, iSeries, descended from AS/400, System 34/36, that some folks consider mainframes.